Improved message processing in two-way data deivces

A technology for data equipment and messages, applied in the field of two-way paging equipment and processing duplicate messages, can solve the problems of inefficient processing of duplicate messages and occupying storage space, etc.

Inactive Publication Date: 2003-05-14
MOTOROLA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, storing the entire replicated message in the two-way pager's memory to maintain respons

Method used

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  • Improved message processing in two-way data deivces
  • Improved message processing in two-way data deivces
  • Improved message processing in two-way data deivces

Examples

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Embodiment Construction

[0011] see figure 1 A new method of handling duplicated messages is described which improves the accuracy of message reception and message-related response characteristics in two-way paging devices. Each received message includes a message header, a signature, response flags and message data. The message header contains the paging type, an address and a subaddress. The response flag includes a response strobe flag, used to indicate whether the message is gated for user response, and a response data flag, used to indicate whether a set of response data is included in the message data.

[0012] The first step 10 of the invention consists in comparing the specific message data and message header information contained in the new message with the message data and message header information of all existing messages stored in the message memory of the two-way pager. In certain cases, the paging type, address, subaddress and message data of all existing messages are compared with th...

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PUM

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Abstract

A two-way data device (200) in which, when a new message is received that comprises identical data and an identical tracking identifier as an existing message, the new message is considered a duplicate of the existing message. Duplicate messages are first checked to determine if the data portion of the message contains errors. When the data portion of the new/duplicate message fails the error check, the data portion of the old message is kept and the data portion of the new message is deleted. Alternatively, when the data portion of the new/duplicate message passes the error check, and a signature and response flag within the new and existing messages meet certain criteria, the data portion of the old message is replaced with the data portion of the new/duplicate message. As a result, message memory is utilized more efficiently as duplicate data is not repetitively stored therein.

Description

Technical field: [0001] The present invention relates generally to a method of improving memory usage in a messaging transceiver, and more particularly to a method of handling duplicate messages which improves message accuracy and response characteristics in bi-directional data devices. The invention also relates to a two-way paging device which employs an improved method of handling duplicate messages. Background technique: [0002] A pager service provider sends messages through a radio communication center (RCC) to selective call receivers within a designated geographic calling area. Generally, service providers place transmitters at various locations throughout the calling area to ensure that messages are efficiently sent and received by selective call receivers anywhere in the area. However, each of the different transmitters does not send the message at the exact same moment. Thus, a selective call receiver may receive an identical or "duplicate" message within a sho...

Claims

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Application Information

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IPC IPC(8): G08B5/22H04W84/02H04W88/02
CPCH04W84/025H04W88/023G08B5/227
Inventor 保拉·C·噶布里拉卡伦·S·罗伯特森卡洛·桑切斯
Owner MOTOROLA INC
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